Revert of Replace scoped_ptr with unique_ptr in webrtc/common_audio/

webrtc/common_audio/channel_buffer.cc

Index: webrtc/common_audio/channel_buffer.cc
diff --git a/webrtc/common_audio/channel_buffer.cc b/webrtc/common_audio/channel_buffer.cc
index 349d4245ccdb6e472db3cb60ee3a951c1e333b3b..44520c6100bc8e222d89b37db929942b51a723bd 100644
--- a/webrtc/common_audio/channel_buffer.cc
+++ b/webrtc/common_audio/channel_buffer.cc
@@ -9,8 +9,6 @@
  */
 
 #include "webrtc/common_audio/channel_buffer.h"
-
-#include "webrtc/base/checks.h"
 
 namespace webrtc {
 
@@ -46,7 +44,7 @@
 
 void IFChannelBuffer::RefreshF() const {
   if (!fvalid_) {
-    RTC_DCHECK(ivalid_);
+    assert(ivalid_);
     const int16_t* const* int_channels = ibuf_.channels();
     float* const* float_channels = fbuf_.channels();
     for (size_t i = 0; i < ibuf_.num_channels(); ++i) {
@@ -60,7 +58,7 @@
 
 void IFChannelBuffer::RefreshI() const {
   if (!ivalid_) {
-    RTC_DCHECK(fvalid_);
+    assert(fvalid_);
     int16_t* const* int_channels = ibuf_.channels();
     const float* const* float_channels = fbuf_.channels();
     for (size_t i = 0; i < ibuf_.num_channels(); ++i) {